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A cannon is fired from the ground. The cannonball initially travels with a speed of 300 m/s at an angel of 25 degrees with respect to the ground. How far above the ground does the cannonball get to? (What is the cannonballs maximum height?)
A string of a violin is 32 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 7.2 x 10-4 kg/m. What are the wave speed and the tension in the string
A spherical mirror has a focal length of -14 cm. Where is the mirror's image for an object which is at a distance of 30 cm? Draw the ray diagram for this set up
A sample of air at a temp of 298K has a relative humidity of 10%. If the temp of 1.00L of this air is decreased to 273K, what will the relative humiduty be at the lower temp
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
Two spheres with masses m1 = 820 kg and m2 = 830 kg are separated by 0.230 m. What is the net gravitational force from them on a 3.0 kg sphere located 0.161 m from m1 and 0.069 m from m2? Use a + sign if the direction is towards m2 and a - sign if..
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, & a power of +1.83 diopters in the close-vision part. Compute the near & far points of this person's uncorrected visio..
Determine the current density, resistance and electric for the copper wire, if the wire is 10 m long
A car (mass 930 kg) is traveling with a speed of 48 mi/h. A bug (mass 6 mg) is traveling in the opposite direction. What speed would the bug need
Where does package hit the ground relative to the point
Suppose a uniform magnetic field B is applied perependicular to the plane of a semicircular loop of radius R and a current through the loop is I
The position of a particle in cm is given by x = (7) cos 9?t, where t is in seconds, What is the frequency, What is the period, What is the amplitude of the particle's motion
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 2.6 x 10-7 C/m2, the plates are separated by a distance of 1.4 x 10-2 m. How fast is the electron moving just before..
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